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145498143 = 3719364657
BaseRepresentation
bin10001010110000…
…10000000011111
3101010210001221010
420223002000133
5244221420033
622234310303
73414466560
oct1053020037
9333701833
10145498143
11751479aa
1240888393
13241b3a9b
1415476167
15cb90863
hex8ac201f

145498143 has 16 divisors (see below), whose sum is σ = 233381120. Its totient is φ = 78765696.

The previous prime is 145498139. The next prime is 145498151. The reversal of 145498143 is 341894541.

It is not a de Polignac number, because 145498143 - 22 = 145498139 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145498123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181930 + ... + 182727.

It is an arithmetic number, because the mean of its divisors is an integer number (14586320).

Almost surely, 2145498143 is an apocalyptic number.

145498143 is a deficient number, since it is larger than the sum of its proper divisors (87882977).

145498143 is a wasteful number, since it uses less digits than its factorization.

145498143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364686.

The product of its digits is 69120, while the sum is 39.

The square root of 145498143 is about 12062.2611064427. The cubic root of 145498143 is about 525.9597175511.

The spelling of 145498143 in words is "one hundred forty-five million, four hundred ninety-eight thousand, one hundred forty-three".

Divisors: 1 3 7 19 21 57 133 399 364657 1093971 2552599 6928483 7657797 20785449 48499381 145498143